Danfoss VLT AQUA Drive FC 200 Programming Manual page 75

Parameter Description
clockwise (the logical product of the
status bits 'running' AND 'reverse').
[165] Local reference Output is high when 3-13 Reference Site
active = [2] Local or when 3-13 Reference Site =
[0] Linked to hand auto at the same time
as the LCP is in hand on mode.
[166] Remote Output is high when 3-13 Reference Site
reference active [1] or Linked to hand/auto [0] while the
LCP is in Auto On mode.
[167] Start command Output is high when there is an active
active start command (i.e., [Auto On]) and a
start command via digital input or bus is
active, or [Hand On].
NOTICE!
All inverse Stop/Coast commands
must be inactive.
[168] Drive in hand Output is high when the adjustable
mode frequency drive is in hand on mode (as
indicated by the LED light above [Hand
on]).
[169] Drive in auto Output is high when the adjustable
mode frequency drive is in Auto mode (as
indicated by the LED light above [Auto
on].
[180] Clock Fault The clock function has been reset to
default (2000-01-01) because of a power
failure.
[181] Preventive One or more of the preventive
Maintenance maintenance events programmed in
23-10 Maintenance Item has passed the
time for the specified action in
23-11 Maintenance Action.
[182] Deragging Deragging is active.
[188] AHF Capacitor See 5-80 AHF Cap Reconnect Delay.
Connect
[189] External Fan External fan control is active.
Control
[190] No-Flow A No-Flow situation or Minimum Speed
situation has been detected if enabled in
Low Power Detection. 22-21 Low Power
Detection, 22-22 Low Speed Detection.
[191] Dry Pump A dry pump condition has been
detected. This function must be enabled
in 22-26 Dry Pump Function.
[192] End of Curve Active when an end of curve condition is
present.
[193] Sleep Mode The adjustable frequency drive/system
has set to Sleep mode. See Sleep mode,
parameter group 22-4*.
[194] Broken Belt A Broken Belt condition has been
detected. This function must be enabled
in 22-60 Broken Belt Function.
[195] Bypass Valve The bypass valve control (digital/relay
Control output in the adjustable frequency drive)
®
VLT AQUA Drive Programming Guide
[199] Pipe Filling
The setting options below are all related to the cascade
controller.
See parameter group 25-** Cascade Controller for more
details.
[200] Full
[201] Pump1
[202] Pump2
[203] Pump3
®
MG20O622 - VLT is a registered Danfoss trademark
is used for compressor systems to unload
the compressor during start-up by using
a bypass valve. After the start command
is given, the bypass valve will be open
until the adjustable frequency drive
reaches 4-11 Motor Speed Low Limit
[RPM]). After the limit has been reached
the bypass valve will be closed, allowing
the compressor to operate normally. This
procedure will not be activated again
until a new start is initiated, and the
adjustable frequency drive speed is zero
when receiving a start signal. Start Delay,
1-71 Start Delay can be used in order to
delay the motor start. The Bypass valve
control principle:
Speed
REF
Speed
Min
ON
OFF
ON
OFF
Start
Figure 3.23
Active when the pipe fill function is
operating. See parameter group 29-0*.
All pumps running and at full speed
Capacity
One or more of the pumps controlled by the
Running cascade controller are running. The function
will also depend on the setting in 25-05 Fixed
Lead Pump. If set to [0] No, Pump 1 refers to
the pump controlled by relay RELAY1, etc. If
set to [1] Yes, Pump 1 refers to the pump
controlled by the adjustable frequency drive
only (without any of the built-in relays
involved) and Pump 2 to the pump controlled
by the relay RELAY1. See Table 3.14
See [201]
Running
See [201]
Running
3
Time
Time
Stop Time
3-49
3